document.write( "Question 115608: Add or subtract as indicated. Express your results in simplist form.\r
\n" ); document.write( "\n" ); document.write( "5a - 12 OVER a squared - 8a + 15 MINUS 3a - 2 OVER a squared - 8a + 15 \n" ); document.write( "
Algebra.Com's Answer #84320 by ankor@dixie-net.com(22740)\"\" \"About 
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5a - 12 OVER a squared - 8a + 15 MINUS 3a - 2 OVER a squared - 8a + 15
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\n" ); document.write( "Assume you mean:
\n" ); document.write( "\"%28%285a-12%29%29%2F%28%28a%5E2-8a%2B15%29%29\" - \"%28%283a-2%29%29%2F%28%28a%5E2-8a%2B15%29%29\"
\n" ); document.write( ":
\n" ); document.write( "They have the same denominators, so you can write it:
\n" ); document.write( "\"%28%285a-12%29-%283a-2%29%29%2F%28%28a%5E2-8a%2B15%29%29\"
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\n" ); document.write( "Remove the brackets, remember a minus outside the brackets changes the signs
\n" ); document.write( "\"%285a-12-3a%2B2%29%2F%28%28a%5E2-8a%2B15%29%29\"
\n" ); document.write( ":
\n" ); document.write( "In the numerator, do the math on like terms and you have;
\n" ); document.write( "\"%282a-10%29%2F%28%28a%5E2-8a%2B15%29%29\"
\n" ); document.write( ":
\n" ); document.write( "We can factor both the numerator and the denominator here:
\n" ); document.write( "\"%282%28a-5%29%29%2F%28%28a-3%29%28a-5%29%29\"
\n" ); document.write( ":
\n" ); document.write( "You can see that the (a-5)'s will cancel, leaving us with:
\n" ); document.write( "\"2%2F%28a-3%29\" \n" ); document.write( "
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